EP0785301B1 - Verfahren und Vorrichtung zum Positionieren von Polfaden in einen Greifer-Axminster Teppichwebmaschine - Google Patents

Verfahren und Vorrichtung zum Positionieren von Polfaden in einen Greifer-Axminster Teppichwebmaschine Download PDF

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Publication number
EP0785301B1
EP0785301B1 EP96120128A EP96120128A EP0785301B1 EP 0785301 B1 EP0785301 B1 EP 0785301B1 EP 96120128 A EP96120128 A EP 96120128A EP 96120128 A EP96120128 A EP 96120128A EP 0785301 B1 EP0785301 B1 EP 0785301B1
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EP
European Patent Office
Prior art keywords
pile yarn
selection
characteristic
movement
pile
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Expired - Lifetime
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EP96120128A
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English (en)
French (fr)
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EP0785301A1 (de
EP0785301B2 (de
Inventor
André Dewispelaere
Hans Desmet
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D03D39/02—Axminster looms, i.e. wherein pile tufts are inserted during weaving
    • D03D39/08—Gripper Axminster looms

Definitions

  • This invention relates to a method and a device for positioning pile yarns in variable selection positions in a carpet weaving machine of the gripper Axminster type, in which pile yarns of different colors are placed next to each other in line in pile yarn loaders, which are moved by shifting according to the pattern in a longitudinal direction controlled by an electronic jacquard device, in order to bring the selected color opposite the gripper jaws.
  • the pile yarns are held in pile yarn loaders which protrude in a horizontal, oblique or vertical direction.
  • the pile yarn ends protrude sufficiently on one side of the pile yarn loaders in order to be taken along by the gripper jaws.
  • the gripper jaws are disposed rotatably in order to grip the protruding yarn ends in an upward turning movement and in order to bring these down, so that they can be woven into the ground fabric of the carpet.
  • the pile yarn loaders were disposed vertically in the past, so that the pile yarn was presented in a horizontal plane. With this disposition the grippers had to turn through a wide angle: in practice this amounted to approximately 155°. With more recent weaving machines of the gripper Axminster type more and more inclined dispositions of the yarn loader are found. Such a weaving machine is for example described in GB-A-2 190 107.
  • Fully horizontally disposed pile yarn loaders are also known from GB-A-1 075 082 and GB-A-1 150 822. With these weaving machines the pile yarns extend in an almost vertical direction and in order that the grippers would be able to take the pile yarn with the selected color according to the pattern, individual yarns with different colors are placed next to each other in the same loader. This loader is then moved in a horizontal direction under the control of a jacquard device, so that the selected color is brought to the pick line of the gripper jaws.
  • Each pile yarn then extends, from this feeder plane upward, to a distribution grid and from here it extends over suitable guiding means to a rack, in which the pile yarn supply for each color is placed.
  • the selected color according to the pattern to be woven is thus obtained by a shifting of the pile yarn loaders performed by a jacquard device, in a common horizontal plane, until the pile yarn with the selected color comes to lie just above the pick line of the grippers.
  • a jacquard device with a punched card as data carrier are known. These devices have a card switching device and an impression device that presses a pin corresponding to the color to be selected from the pile yarn loaders. Through a sliding mechanism the pins are brought into line through which the pile yarn loaders are going to slide and therefore the selected color is brought to the line of the gripper jaws.
  • the time which is available for the selection movement, is dependent on the time that is necessary for the reset movement.
  • the coupling of the stationary pile yarn loader to a forward moving cutter however causes a jolt, which with fast running machines leads to the development of vibrations in the pile yarn loaders.
  • the reset movement whereby all pile yarn loaders have to be brought into a reference position quickly, also causes a strong impact in the weaving machine, which gives a jerk to all accompanying pile yarns.
  • the weaving speed is limited because of this.
  • each pile yarn loader is brought directly from a selection position to a following selection position and in that the selection movement remains limited to moving over that distance between two successive selection positions.
  • the choice of the selection movement between two successive selection positions takes into account the pattern to be woven. According to a particular embodiment of the invention the selection movement can occur in both directions.
  • the shifting of the pile yarn loaders in order to take up a selection position occurs by means of a linear motor with electronic control according to the pattern to be woven.
  • a carpet weaving machine of the "gripper Axminster" type comprises a series of pile yarn loaders that are movably disposed next to each other. In each loader pile yarns 1-8 of different colors are placed next to each other in a line.
  • the pile yarn loaders 10 are moved under control of an electronic jacquard device by shifting in a longitudinal direction, in order to bring the selected color opposite the gripper jaws.
  • Each pile yarn loader is connected to a linear motor 11, 13. With a density of e.g. 276 grippers per m only a division of 3.6 mm per pile yarn is available.
  • the linear motors 11, 13 are therefore preferably placed above and under the pile yarn loaders 10 whereby the odd pile yarn loaders 10 are operated by the above lying 11 and the even pile yarn loaders by the underlying 13 linear motors. Because of this a theoretical division of the linear motors is already obtained that is double the division of the pile yarn loaders.
  • Each linear motor 11, 13 comprises a stator provided with the windings and slide 12, 14 with permanent poles.
  • the linear motors are used with integrated straight line guide fig. 2.
  • These straight line guides can be of the slide bearing or the recirculating ball bushing type. If color 5 has to be sent toward the actual color 1, then the pile yarn loader will have to be shifted over (5-1) x mutual distance colors over a positively directed distance, e.g. to the left in fig. 1. If subsequently color 3 has to be selected, then the pile yarn loader 10 will shift a negative distance over (3-5) x mutual color distance.
  • the control of each linear motor 11, 13 will determine the number of movement steps that corresponds to the directed distance between the new and present color. This movement can be performed jolt-free and harmoniously, so that a higher operating speed becomes possible.
  • the individually controllable driving of the pile yarn loaders 10 furthermore makes it possible without external accessories to slide out each pile yarn loader separately for rethreading or for pulling through a snagged pile yarn again.
  • the pile yarn loader With a weaving machine, equipped with a detection system for a missed pile yarn end, the pile yarn loader can immediately be completely slid out when the machine is at rest so that the loader, on which the fault occurs, is immediately visible and is brought into its most suitable position for servicing or repair of the fault.
  • This device can be utilized for horizontally, obliquely and vertically disposed pile yarn loaders 10.
  • This driving of the pile yarn loaders 10 is compact and requires no further mechanical driving component. Furthermore use can be made of modern operating techniques, in particular an electronic control directly connected to the electronic control of a jacquard device.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Claims (8)

  1. Methode und eine Vorrichtung zum Positionieren von Polgarnen in variablen Auswahlstellungen bei einer Teppichwebmaschine der Axminstergreiferbauart bei der Polgarne (1-8) verschiedener Farbe nebeneinander auf eine Linie in Polgarnlader (10) angeordnet werden, die mustermäßig verschoben werden in eine von einer elektronischen Jacquardvorrichtung gesteuerte Längsrichtung, um die gewählte Farbe gegenüber den Greiferbacken (9) zu stellen, dadurch gekennzeichnet, dass jeder Polgarnlader (10) von einer Auswahlstellung aus direkt in die nächste Auswahlstellung gebracht wird und wobei die Auswahlbewegung sich beschränkt auf die Bewegung über diesen Abstand zwischen zwei aufeinanderfolgenden Auswahlstellungen.
  2. Methode gemäß Anspruch 1, dadurch gekennzeichnet, dass die Wahl der Auswahlbewegung zwischen zwei aufeinanderfolgenden Auswahlstellungen das zu webende Muster berücksichtigt.
  3. Methode gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Auswahlbewegung der Polgarnlader (10) durch Verschieben in die beiden Richtungen geschehen kann.
  4. Methode gemäß einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Auswahlbewegung der Polgarnlader (10) durch Verschieben mittels eines Linearmotors (11, 13) mit elektronischer Steuerung dem zu webenden Muster gemäß geschieht.
  5. Methode gemäß einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Jacquardsteuerung für jeden einzelnen Linearmotor (11, 13) die Richtung der Bewegung und die Zahl der Bewegungsschritte bestimmt, die mit dem angedeuteten Abstand zwischen zwei aufeinanderfolgenden Auswahlstellungen übereinstimmen.
  6. Vorrichtung zum Positionieren von Polgarnen in variablen Auswahlstellungen auf einer Teppichwebmaschine der Axminstergreiferbauart, wobei die Polgarne (1-8) verschiedener Farbe sich in nebeneinander, auf einer Linie angeordneten Polgarnladern (10) befinden, dadurch gekennzeichnet, dass sie Mittel umfasst um jeden einzelnen Polgarnlader (10) aus einer Auswahlstellung in eine nächste Auswahlstellung zu bringen, so dass die Auswahlbewegung sich beschränkt auf die Bewegung über diesen Abstand zwischen zwei aufeinanderfolgenden Auswahlstellungen.
  7. Vorrichtung gemäß Anspruch 6, dadurch gekennzeichnet, dass jeder einzelne Polgarnlader mit einem Linearmotor (11, 13) verbunden ist.
  8. Vorrichtung gemäß Anspruch 6, dadurch gekennzeichnet, dass der Linearmotor abwechselnd über und unter den Polgarnladern (10) angeordnet wird.
EP96120128A 1996-01-16 1996-12-14 Verfahren und Vorrichtung zum Positionieren von Polfaden in einen Greifer-Axminster Teppichwebmaschine Expired - Lifetime EP0785301B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9600034A BE1010005A4 (nl) 1996-01-16 1996-01-16 Werkwijze en inrichting om poolgarens te positioneren in een grijper-axminster tapijtweefmachine.
BE9600034 1996-01-16

Publications (3)

Publication Number Publication Date
EP0785301A1 EP0785301A1 (de) 1997-07-23
EP0785301B1 true EP0785301B1 (de) 2000-02-09
EP0785301B2 EP0785301B2 (de) 2003-05-21

Family

ID=3889472

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96120128A Expired - Lifetime EP0785301B2 (de) 1996-01-16 1996-12-14 Verfahren und Vorrichtung zum Positionieren von Polfaden in einen Greifer-Axminster Teppichwebmaschine

Country Status (5)

Country Link
US (1) US5806568A (de)
EP (1) EP0785301B2 (de)
BE (1) BE1010005A4 (de)
DE (1) DE69606617T3 (de)
PT (1) PT785301E (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6220307B1 (en) 1999-01-22 2001-04-24 Griffith Textile Machines Limited Gripper axminster loom with tuft yarn selection mechanism

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1010005A4 (nl) † 1996-01-16 1997-11-04 Wiele Michel Van De Nv Werkwijze en inrichting om poolgarens te positioneren in een grijper-axminster tapijtweefmachine.
BE1012763A3 (nl) * 1999-06-25 2001-03-06 Wiele Michel Van De Nv Poolgaren selectiesysteem voor grijperaxminsterweefmachines.
GB2367076B (en) * 2000-09-19 2004-08-25 Ulster Carpet Mills Apparatus for supplying tufts of yarn to grippers of a gripper loom
BE1014734A3 (nl) 2002-03-29 2004-03-02 Wiele Michel Van De Nv Inrichting en werkwijze voor het aandrijven van een of meerdere poolladers voor de selectie van een of meerdere poolgarens.
BE1017094A3 (nl) * 2006-04-05 2008-02-05 Wiele Michel Van De Nv Werkwijze voor het weven van poolweefsels met variabele poolhoogte.

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1075082A (en) * 1965-06-18 1967-07-12 Brintons Ltd Improvements relating to carpet looms
DE1535771B1 (de) * 1965-11-30 1970-05-27 Alfa Laval Bergedorfer Eisen Florfadenwaehlwerk
GB1150822A (en) * 1967-02-22 1969-05-07 Brintons Ltd Improvements in Jacquards for Gripper Axminster Looms
GB1357528A (en) * 1970-08-15 1974-06-26 Quayle Carpets Ltd Gripper axminster looms
GB1405403A (en) * 1974-03-26 1975-09-10 Thomson Shpherd Co Ltd Carpet looms
GB1573726A (en) * 1978-05-25 1980-08-28 Brintons Ltd Carpet looms
GB2189513A (en) * 1986-04-26 1987-10-28 Crabtree David & Son Ltd Pile yarn selection in carpet looms
GB2190107B (en) * 1986-04-26 1989-11-29 Crabtree David & Son Ltd Yarn selection in axminster carpet looms
GB2189515B (en) * 1986-04-26 1989-12-06 Crabtree David & Son Ltd Yarn selection in axminster carpet looms
GB8812595D0 (en) * 1988-05-27 1988-06-29 Bonas Griffith Ltd Electronically controlled tuft yarn selection arrangement
GB9403185D0 (en) * 1994-02-18 1994-04-06 Griffith Textile Mach Ltd Loom
BE1010005A4 (nl) † 1996-01-16 1997-11-04 Wiele Michel Van De Nv Werkwijze en inrichting om poolgarens te positioneren in een grijper-axminster tapijtweefmachine.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6220307B1 (en) 1999-01-22 2001-04-24 Griffith Textile Machines Limited Gripper axminster loom with tuft yarn selection mechanism

Also Published As

Publication number Publication date
DE69606617T3 (de) 2003-12-24
EP0785301A1 (de) 1997-07-23
US5806568A (en) 1998-09-15
EP0785301B2 (de) 2003-05-21
BE1010005A4 (nl) 1997-11-04
DE69606617D1 (de) 2000-03-16
DE69606617T2 (de) 2000-10-26
PT785301E (pt) 2000-07-31

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